Steam Assisted Gravity Drain

Abstract

A steam assisted gravity drain for heavy oil, comprising a body sub-assembly having first and second ends; a top sub insertable into the body sub-assembly; a bottom sub insertable into the body sub-assembly; first and second diffuser caps encircling the top sub and the bottom sub, respectively; a plurality of radially arranged flow tubes extending between the diffuser caps and the body sub-assembly; and a sliding sleeve extending between the top and bottom subs. A method of flow conditioning for heavy oil pipelines, comprising the steps of attaching a plurality of steam assisted gravity drains in a closed position to a liner; running the drains vertically downhole into the horizontal leg of a well; and running a shifting tool downhole and selectively opening the sleeve of the drain by stabbing the shifting tool into the sleeve and pulling the sleeve back.

Dependencies are inferred from the claim text.